📉 Quadratic Equation
Solve ax² + bx + c = 0 instantly
Solve: ax² + bx + c = 0
About this calculator
Solve any quadratic equation of the form ax² + bx + c = 0 in one step. Enter the coefficients a, b, and c, and the calculator applies the quadratic formula, x = (−b ± √(b² − 4ac)) / 2a, showing each step of the working. It also computes the discriminant (b² − 4ac) and explains what it means: positive gives two real solutions, zero gives one repeated root, and negative means the solutions are complex numbers.
Tip: if a is zero, the equation isn't quadratic at all — it's just a linear equation with a single solution.